I have already shared the information about YouTube in one of my earlier article. Due to censorship on the internet in few countries, the services like YouTube are blocked. Even though, YouTube is the third most-visited website, the censorship of YouTube is strictly implemented.
This list is not blocked YouTube site completely. Only a few section or places like school and other videos that are creating political issues are being blocked.
List of YouTube Censored Countries:
United Arab Emirates
Read: How to Monetize Your Youtube Videos